• Documentation
  • Pricing
  • Training Explore free online learning resources from videos to hands-on-labs
  • Blog Read the latest posts from the Azure team
  • Free account

    Language Understanding

    A machine learning-based service to build natural language understanding into apps, bots, and IoT devices. Quickly create enterprise-ready, custom models that continuously improve.

    See Language Understanding in action

    Smart light application in action

    LUIS application response

    Pivothead

    "Language understanding technology helps us bridge the gap between what people say and what they mean."

    Alexander Mejia, Owner and Creative Director, Human Interact

    Benefits

    Add natural language understanding to your apps

    Designed to identify valuable information in conversations, Language Understanding interprets user goals (intents) and distills valuable information from sentences (entities), for a high quality, nuanced language model. Language Understanding integrates seamlessly with the Speech service for instant Speech to Intent processing, and with the Azure Bot Service, making it easy to create a sophisticated bot.

    Quickly build a custom language solution

    Powerful developer tools are combined with customizable pre-built apps and entity dictionaries, such as Calendar, Music, and Devices, so you can build and deploy a solution more quickly. Dictionaries are mined from the collective knowledge of the web and supply billions of entries, helping your model to correctly identify valuable information from user conversations.

    Always learning and improving

    Reinforcement learning is used to continuously improve the quality of the natural language processing models. Once the model starts processing input, Language Understanding begins active learning, allowing you to constantly update and improve the model.

    Enterprise-ready, available worldwide

    The service is ready to be deployed in commercial applications and can scale with enterprise quality and performance. The service meets international compliance standards and supports 12 languages—making it highly accessible.

    Navitime

    "LUIS is very good at understanding people's intent, which was an important point for us. It also has a learning capability, which allows us to continually improve our service."

    Daisuke Kezuka, General Manager of Travel Business, NAVITIME

    Explore Language Understanding scenarios

    Information ChatbotThis Informational Bot can answer questions defined in a knowledge set or FAQ using Cognitive Services QnA Maker and answer more open-ended questions using Azure Search.AzureActive DirectoryAzureBot ServiceLanguageUnderstandingCustomer mobileConsume, PC, MobileCloud15AzureApp ServiceAzureApp Insights2StructuredAzure Search7634QnA MakerApplication bot
    1. Overview
    2. Flow

    Information Chatbot

    Overview

    This Informational Bot can answer questions defined in a knowledge set or FAQ using Cognitive Services QnA Maker and answer more open-ended questions using Azure Search.

    Flow

    1. 1 Employee starts the Application Bot
    2. 2 Azure Active Directory validates the employee’s identity
    3. 3 The employee can ask the bot what type of queries are supported
    4. 4 Cognitive Services returns a FAQ built with the QnA Maker
    5. 5 The employee defines a valid query
    6. 6 The Bot submits the query to Azure Search which returns information about the application data
    7. 7 Application insights gathers runtime telemetry to help development with Bot performance and usage
    Commerce chatbotTogether, the Azure Bot Service and Language Understanding service enable developers to create conversational interfaces for various scenarios like banking, travel, and entertainment. For example, a hotel’s concierge can use a bot to enhance traditional e-mail and phone call interactions by validating a customer via Azure Active Directory and using Cognitive Services to better contextually process customer requests using text and voice. The Speech recognition service can be added to support voice commands.1234567
    1. Overview
    2. Flow

    Commerce chatbot

    Overview

    Together, the Azure Bot Service and Language Understanding service enable developers to create conversational interfaces for various scenarios like banking, travel, and entertainment. For example, a hotel’s concierge can use a bot to enhance traditional e-mail and phone call interactions by validating a customer via Azure Active Directory and using Cognitive Services to better contextually process customer requests using text and voice. The Speech recognition service can be added to support voice commands.

    Flow

    1. 1 Customer uses your mobile app
    2. 2 Using Azure AD B2C, the user authenticates
    3. 3 Using the custom Application Bot, user requests information
    4. 4 Cognitive Services helps process the natural language request
    5. 5 Response is reviewed by customer who can refine the question using natural conversation
    6. 6 Once the user is happy with the results, the Application Bot updates the customer’s reservation
    7. 7 Application insights gathers runtime telemetry to help development with Bot performance and usage
    IoT devicesCreate seamless conversational interfaces with all of your internet-accessible devices—from your connected television or fridge to devices in a connected power plant. LUIS is able to integrate up to 500 intents to translate commands into smart actions.Customer mobileConsume, PC, MobileCloud14IoT devicesThird party352AzureBot ServiceAzureApp ServiceAzureApp InsightsLanguageUnderstanding
    1. Overview
    2. Flow

    IoT devices

    Overview

    Create seamless conversational interfaces with all of your internet-accessible devices—from your connected television or fridge to devices in a connected power plant. LUIS is able to integrate up to 500 intents to translate commands into smart actions.

    Flow

    1. 1 User logs into Skype and accesses the IoT bot
    2. 2 Using voice, the user asks the bot to turn on the lights via the IoT device
    3. 3 The request is relayed to a third-party service that has access to the IoT device network
    4. 4 The results of the command are returned to the user
    5. 5 Application Insights gathers runtime telemetry to help development with bot performance and usage

    "We determined that artificial intelligence could be the key to offering our customers the differentiated and personalized service and cohesive customer journey we're aiming for."

    Antonia Colin-Jones, Strategic Partnership Program Manager, Dixons Carphone

    Read the story

    Dixons Carphone

    "Dynamics 365, as well as LUIS for interacting with the bot using natural language, are very intuitive and easy to use."

    Melanie Sachse, Central Sales Development and Digitalization, VHV Allgemeine Versicherung AG

    Read the story

    VHV Allgemeine Versicherung AG

    Explore the Cognitive Services APIs

    Computer Vision

    Distill actionable information from images

    Face

    Detect, identify, analyze, organize, and tag faces in photos

    Ink Recognizer PREVIEW

    An AI service that recognizes digital ink content, such as handwriting, shapes, and ink document layout

    Video Indexer

    Unlock video insights

    Custom Vision

    Easily customize your own state-of-the-art computer vision models for your unique use case

    Form Recognizer PREVIEW

    The AI-powered document extraction service that understands your forms

    Text Analytics

    Easily evaluate sentiment and topics to understand what users want

    Translator Text

    Easily conduct machine translation with a simple REST API call

    QnA Maker

    Distill information into conversational, easy-to-navigate answers

    Language Understanding

    Teach your apps to understand commands from your users

    Immersive Reader PREVIEW

    Empower users of all ages and abilities to read and comprehend text

    Speech Services

    Unified speech services for speech-to-text, text-to-speech and speech translation

    Speaker Recognition PREVIEW

    Use speech to identify and verify individual speakers

    Content Moderator

    Automated image, text, and video moderation

    Anomaly Detector PREVIEW

    Easily add anomaly detection capabilities to your apps.

    Personalizer PREVIEW

    An AI service that delivers a personalized user experience

    Ready to supercharge your app?